Abstract
The air drag and cooling effect of a line of sprinkler water spray on fire-induced hot air is studied using a two-dimensional field modelling technique. The sprinkler water spray is described by an imposed envelope with the shape obtained from the water droplet trajectories. The interaction between the fire-induced hot air and the sprinkler water droplet is described in the source terms of the enthalpy and momentum conservation equations, i.e., the Particle-Source-in-Cell method. The PISO scheme is used to solve the set of equations. In this way, a 'microscopic' description on the interaction between the sprinkler water sprays with the fire-induced hot air as well as the macroscopic parameters such as drag to buoyancy ratio, air entrainment rate and convective cooling amount is achieved.
Original language | English |
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Pages (from-to) | 63-81 |
Number of pages | 19 |
Journal | Mathematical and Computer Modelling |
Volume | 15 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jan 1991 |
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications